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path: root/drivers/usb/input/xpad.c
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Diffstat (limited to 'drivers/usb/input/xpad.c')
-rw-r--r--drivers/usb/input/xpad.c75
1 files changed, 34 insertions, 41 deletions
diff --git a/drivers/usb/input/xpad.c b/drivers/usb/input/xpad.c
index d65edb2..a7fa1b1 100644
--- a/drivers/usb/input/xpad.c
+++ b/drivers/usb/input/xpad.c
@@ -104,13 +104,12 @@ MODULE_DEVICE_TABLE (usb, xpad_table);
struct usb_xpad {
struct input_dev dev; /* input device interface */
struct usb_device *udev; /* usb device */
-
+
struct urb *irq_in; /* urb for interrupt in report */
unsigned char *idata; /* input data */
dma_addr_t idata_dma;
-
+
char phys[65]; /* physical device path */
- int open_count; /* reference count */
};
/*
@@ -128,35 +127,35 @@ static void xpad_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *d
struct input_dev *dev = &xpad->dev;
input_regs(dev, regs);
-
+
/* left stick */
input_report_abs(dev, ABS_X, (__s16) (((__s16)data[13] << 8) | data[12]));
input_report_abs(dev, ABS_Y, (__s16) (((__s16)data[15] << 8) | data[14]));
-
+
/* right stick */
input_report_abs(dev, ABS_RX, (__s16) (((__s16)data[17] << 8) | data[16]));
input_report_abs(dev, ABS_RY, (__s16) (((__s16)data[19] << 8) | data[18]));
-
+
/* triggers left/right */
input_report_abs(dev, ABS_Z, data[10]);
input_report_abs(dev, ABS_RZ, data[11]);
-
+
/* digital pad */
input_report_abs(dev, ABS_HAT0X, !!(data[2] & 0x08) - !!(data[2] & 0x04));
input_report_abs(dev, ABS_HAT0Y, !!(data[2] & 0x02) - !!(data[2] & 0x01));
-
+
/* start/back buttons and stick press left/right */
input_report_key(dev, BTN_START, (data[2] & 0x10) >> 4);
input_report_key(dev, BTN_BACK, (data[2] & 0x20) >> 5);
input_report_key(dev, BTN_THUMBL, (data[2] & 0x40) >> 6);
input_report_key(dev, BTN_THUMBR, data[2] >> 7);
-
+
/* "analog" buttons A, B, X, Y */
input_report_key(dev, BTN_A, data[4]);
input_report_key(dev, BTN_B, data[5]);
input_report_key(dev, BTN_X, data[6]);
input_report_key(dev, BTN_Y, data[7]);
-
+
/* "analog" buttons black, white */
input_report_key(dev, BTN_C, data[8]);
input_report_key(dev, BTN_Z, data[9]);
@@ -168,7 +167,7 @@ static void xpad_irq_in(struct urb *urb, struct pt_regs *regs)
{
struct usb_xpad *xpad = urb->context;
int retval;
-
+
switch (urb->status) {
case 0:
/* success */
@@ -183,7 +182,7 @@ static void xpad_irq_in(struct urb *urb, struct pt_regs *regs)
dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
goto exit;
}
-
+
xpad_process_packet(xpad, 0, xpad->idata, regs);
exit:
@@ -196,25 +195,19 @@ exit:
static int xpad_open (struct input_dev *dev)
{
struct usb_xpad *xpad = dev->private;
-
- if (xpad->open_count++)
- return 0;
-
+
xpad->irq_in->dev = xpad->udev;
- if (usb_submit_urb(xpad->irq_in, GFP_KERNEL)) {
- xpad->open_count--;
+ if (usb_submit_urb(xpad->irq_in, GFP_KERNEL))
return -EIO;
- }
-
+
return 0;
}
static void xpad_close (struct input_dev *dev)
{
struct usb_xpad *xpad = dev->private;
-
- if (!--xpad->open_count)
- usb_kill_urb(xpad->irq_in);
+
+ usb_kill_urb(xpad->irq_in);
}
static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id)
@@ -224,19 +217,19 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
struct usb_endpoint_descriptor *ep_irq_in;
char path[64];
int i;
-
+
for (i = 0; xpad_device[i].idVendor; i++) {
if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
(le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
break;
}
-
+
if ((xpad = kmalloc (sizeof(struct usb_xpad), GFP_KERNEL)) == NULL) {
err("cannot allocate memory for new pad");
return -ENOMEM;
}
memset(xpad, 0, sizeof(struct usb_xpad));
-
+
xpad->idata = usb_buffer_alloc(udev, XPAD_PKT_LEN,
SLAB_ATOMIC, &xpad->idata_dma);
if (!xpad->idata) {
@@ -251,18 +244,18 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
kfree(xpad);
return -ENOMEM;
}
-
+
ep_irq_in = &intf->cur_altsetting->endpoint[0].desc;
-
+
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
xpad->idata, XPAD_PKT_LEN, xpad_irq_in,
xpad, ep_irq_in->bInterval);
xpad->irq_in->transfer_dma = xpad->idata_dma;
xpad->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
+
xpad->udev = udev;
-
+
xpad->dev.id.bustype = BUS_USB;
xpad->dev.id.vendor = le16_to_cpu(udev->descriptor.idVendor);
xpad->dev.id.product = le16_to_cpu(udev->descriptor.idProduct);
@@ -273,21 +266,21 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
xpad->dev.phys = xpad->phys;
xpad->dev.open = xpad_open;
xpad->dev.close = xpad_close;
-
+
usb_make_path(udev, path, 64);
snprintf(xpad->phys, 64, "%s/input0", path);
-
+
xpad->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
-
+
for (i = 0; xpad_btn[i] >= 0; i++)
set_bit(xpad_btn[i], xpad->dev.keybit);
-
+
for (i = 0; xpad_abs[i] >= 0; i++) {
-
+
signed short t = xpad_abs[i];
-
+
set_bit(t, xpad->dev.absbit);
-
+
switch (t) {
case ABS_X:
case ABS_Y:
@@ -310,11 +303,11 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
break;
}
}
-
+
input_register_device(&xpad->dev);
-
+
printk(KERN_INFO "input: %s on %s", xpad->dev.name, path);
-
+
usb_set_intfdata(intf, xpad);
return 0;
}
@@ -322,7 +315,7 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
static void xpad_disconnect(struct usb_interface *intf)
{
struct usb_xpad *xpad = usb_get_intfdata (intf);
-
+
usb_set_intfdata(intf, NULL);
if (xpad) {
usb_kill_urb(xpad->irq_in);
generated by cgit v1.1 at 2024-11-01 00:46:02 +0000